Sharing the skies with unmanned aerial vehicles (UAVs) is a challenge for aviation, demanding meticulous separation management. The surge in UAV operations raises pressing concerns about strategic and tactical conflicts in U-space airspaces. As these concerns escalate, the need for a nuanced understanding of the intricate relationship between separation and capacity becomes paramount. In this context, the EU-funded SPATIO project aims to address these challenges and usher in a new era of safety and efficiency in UAV operations. Specifically, this cutting-edge initiative delves into the intricacies of dynamic capacity management services. SPATIO paves the way for seamless coexistence in the constantly evolving world of UAVs.